word-forming element meaning after, from Latin post behind, after, afterward, from *pos-ti (cf. Arcadian pos, Doric poti toward, to, near, close by; Old Church Slavonic po behind, after, pozdu late; Lithuanian pas at, by), from PIE *apo-(cf. Greek apo from, Latin ab away from see apo-).
Gate of Europe. Puerta de Europa. The Gate of Europe towers (Spanish: Puerta de Europa), also known as KIO Towers (Torres KIO), are twin office buildings in Madrid, Spain. The towers have a height of 114 m (374 ft) and have 26 floors.
Plaza de ColÃ³n & Oficina de Turismo ColÃ³n. The Plaza de ColÃ³n and Oficina de Turismo ColÃ³n are situated next to the Serrano, Goya and Jorge Juan streets, about a mile to the northeast of Puerta del Sol in the centre of the city. The plaza was originally called Plaza de Santiago, or St, James Square. In 1893 it was decided to rename the square to Plaza de ColÃ³n in honour of Chistopher Columbus.